Kobelco Mini-Excavators Deliver Power

June 2014, Vol. 69, No. 6

Kobelco Construction Machinery USA currently offers four mini-excavators in the 3,000 to 12,000 pound classes.

The smallest of Kobelco’s mini-excavators is the SK17SR model. This 15.2 horsepower, 3,640-pound machine is ideal for working in confined areas. Its compact footprint with zero tail overhang and tracks that retract to an overall width of 39 inches, allow it to easily fit through narrow openings. This excavator features fast and smooth arm movement for reduced cycle times and greater productivity as well as a bucket exclusively designed with a round bottom for increased penetration. KOBELCO’s SK17SR boasts a maximum digging depth of 7 feet 1 inch, a bucket digging force of 3,420 pounds and a bucket capacity of .058 cubic yards. Auxiliary hydraulics, pattern changers and a dozer blade are standard equipment with this model.

The SK27SR and SK35SR mini-excavators provide a bit more muscle for heavier-duty digging and lifting, while their zero tail swing radius is perfect for jobs where space is limited. These 5,870 and 8,200 pound machines have excellent stability and optional steel or rubber track shoes which can be selected based on a job’s terrain. For heavy digging, these models use an Integrated-Flow Pump System (IFPS) which directs extra output from the third pump to the arm circuit for added power. Combined with Tier IV engines, both machines offer excellent hydraulic efficiency and maximum performance. Kobelco’s 21.3 horsepower SK27SR has a bucket digging force of 6,341 pounds and a bucket capacity of 0.105 cubic yards. The slightly larger 28.4 horsepower SK35SR has a bucket digging force of 8,430 pounds and a bucket capacity of 0.144 cubic yards. Auxiliary hydraulics, pattern changers and a dozer blade are standard equipment with both models. An angle dozer is available for the SK35SR.

Kobelco’s 55SRx is a 12,295 pound, 39 horsepower short radius machine that provides full-size performance. It features a long X-frame for excellent support, a high-grade, reinforced steel boom and arm for increased strength, a cast-iron boom swing bracket for longevity and durability and sealed rollers, sprockets and travel motors to extend track life. The 55SRx also utilizes the Kobelco IFPS system for increased power and hydraulic efficiency. This model has a maximum digging depth of 12 feet 10 inches and a bucket breakout force of 11,240 pounds. kobelco-usa.com